High-pressure casting stop valve

Abstract

The invention belongs to the technical field of stop valves, and particularly relates to a high-pressure casting stop valve which comprises a valve body, a guide plate is arranged in the valve body, a valve hole is formed in the guide plate, a valve cover assembly is fixedly connected to the upper end of the valve body, a rotating rod assembly is in threaded connection with the interior of the valve cover assembly, and a pressing rod assembly is rotationally connected to the lower end of the rotating rod assembly. The pressing rod assembly is in sliding connection with the valve cover assembly, after the pressing rod assembly moves downwards, a cover is pressed on the valve hole, no matter the pressing rod assembly moves upwards or downwards, the lower end of the pressing rod assembly moves vertically, does not rotate and makes extrusion contact with the edge of the valve hole, and the situation that a valve rod in a traditional stop valve rotates or moves upwards or downwards in a rotating mode is avoided. The lower end of the valve rod rubs with the edge of the valve hole, the edge of the valve hole or the bottom of the valve rod is abraded after long-time use, and the sealing performance is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of stop valves, and in particular relates to a high-pressure casting stop valve. Background Art

[0002] When the valve stem in the existing stop valve rotates up or down, the lower end of the valve stem rubs against the edge of the valve hole. Long-term use will wear the edge of the valve hole or the bottom of the valve stem, resulting in a decrease in its sealing performance.

[0003] For example, the stop valve with patent application number CN201410052370.X includes a valve body, a valve cover and a valve stem, a valve seat is provided in the valve body, a valve disc is provided on the valve stem, the valve disc is in contact with the valve seat, the valve disc includes a disc cover and a disc body, the valve stem is inserted into the disc cover and fixedly connected to the disc body, a disc plate is fixedly connected to the other end of the disc body opposite to the valve stem, the disc body and the disc plate are detachably connected, an annular groove is provided between the disc body and the disc plate, a first annular seal is provided in the annular groove, the outer periphery of the first annular seal is in contact with the valve seat, the first annular seal includes alternatingly stacked rigid gasket layers and soft gasket layers, and a second seal is fixedly provided on the other end of the disc plate opposite to the valve stem. However, the disadvantage of this technical solution is that when the valve stem descends and contacts the valve hole, the lower end of the valve stem will rub against the edge of the valve hole, and long-term use will wear the edge of the valve hole or the bottom of the valve stem, resulting in a decrease in its sealing performance. Summary of the invention

[0004] The purpose of the present invention is to provide a high pressure casting stop valve to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A high-pressure cast stop valve comprises a valve body, a guide plate is arranged on the valve body, a valve hole is arranged on the guide plate, a valve cover assembly is fixedly connected to the upper end of the valve body, a rotating rod assembly is internally threadedly connected to the valve cover assembly, a pressure rod assembly is rotatably connected to the lower end of the rotating rod assembly, the pressure rod assembly is slidably connected to the valve cover assembly, and after the pressure rod assembly moves downward, the cover is pressed on the valve hole.

[0006] Furthermore, the valve cover assembly includes a connecting tube 1, which is fixed at the upper end of the valve body, a positioning plate is provided at the bottom of the connecting tube 1, the positioning plate is slidably connected to the pressure rod assembly, a pressure cover is fixed at the upper end of the connecting tube 1, the pressure cover seals the packing 1 at the connection between the connecting tube 1 and the rotating rod assembly, a support rod is fixed at the upper end of the pressure cover, the support rod is threadedly connected to the rotating rod assembly, and a reinforcing rib is provided at the connection between the pressure cover and the support rod.

[0007] Furthermore, the rotating rod assembly includes an upper rotating rod, a filler is provided at the rotating connection between the upper rotating rod and the connecting pipe, the lower end of the upper rotating rod is rotatably connected to the pressure rod assembly, the middle part of the upper rotating rod is threadedly connected to the support rod, the upper rotating rod is fixed with a hand wheel, and the outer surface of the upper part of the upper rotating rod is provided with scale lines.

[0008] Furthermore, the pressure rod assembly includes a lower pressure rod, which is slidably connected to the positioning plate, and the lower end of the lower pressure rod is inserted into the valve disc. The valve disc is fixedly connected to the lower pressure rod by a fixing screw, and the end of the fixing screw is hidden in the groove at the bottom of the valve disc. A blocking cover is buckled in the groove at the bottom of the valve disc, and an annular boss is provided at the upper edge of the valve hole. After the valve disc moves downward, the side edge of the valve disc fits with the annular boss.

[0009] Furthermore, a liquid inlet connecting assembly is provided on one side of the valve body, and a liquid outlet connecting assembly is provided on the other side of the valve body. The liquid outlet connecting assembly includes a connecting pipe 2, which is fixed to the side of the valve body, and a cross bracket 1 is provided at the end of the connecting pipe 2, which is fixedly connected to one end of a spring, and a limited ball 1 is fixed at the other end of the spring 1. A fixed pipe 1 is slidingly connected to the outer side of the connecting pipe 2, and a baffle is provided at the end of the connecting pipe 2. After the connecting pipe 2 is plugged into the water outlet pipe, the fixed pipe 1 is threadedly connected to the water outlet pipe, and a cross bracket 2 is fixed in the water outlet pipe, and a push rod 1 is fixed on the cross bracket 2, and the front of the push rod 1 rests on the ball 1.

[0010] Furthermore, a rubber pad 1 is provided between the connecting pipe 2 and the water outlet pipe, the middle part of the cross section of the rubber pad 1 is elliptical, part of the elliptical rubber pad 1 is located in the connecting pipe 2, and part of the elliptical rubber pad 1 is located in the water outlet pipe.

[0011] Furthermore, the liquid inlet connection assembly includes connecting pipe 2, which is fixed on the side of the valve body, connected to the water inlet pipe, and a rubber pad 2 is provided at the connection between connecting pipe 2 and the water inlet pipe, the water inlet pipe is slidably connected to fixed pipe 3, and fixed pipe 3 is threadedly connected to connecting pipe 2.

[0012] Furthermore, a cross bracket four is provided at the end of the water inlet pipe, which is fixedly connected to one end of the spring two, and a limiting ball two is fixed to the other end of the spring two. A cross bracket three is fixed in the connecting pipe two, and a push rod two is fixed on the cross bracket three, and the front end of the push rod two is against the limiting ball two.

[0013] Furthermore, a cleaning assembly is fixed to the lower end of the valve body, and the cleaning assembly includes a connecting pipe four, which is fixed to the lower end of the valve body, a dust cover is inserted at the lower end of the connecting pipe four, the connecting pipe four is slidably connected to the outer rod, a connecting plate is fixed to the upper end of the outer rod, two groups of brackets are fixed to the upper end of the connecting plate, the upper ends of the two groups of brackets are rotatably connected to bent rods, a brush assembly is provided on the bent rod, the lower end of the bent rod is rotatably connected to the connecting rod, the lower end of the connecting rod is rotatably connected to a turntable, an inner rod is fixed to the lower end of the turntable, the inner rod slides in the outer rod, the connecting plate is slidably connected to the inner rod, and a lever is fixed to the lower end of the outer rod.

[0014] Furthermore, filler three is sealed at the connection between the connecting pipe four and the outer rod, filler two is sealed at the connection between the connecting plate and the inner rod, a clamping block is provided on the inner rod, the clamping block has a certain elasticity, the clamping block is clamped in the clamping groove on the outer rod, and a boss is provided on the outer side of the outer rod.

[0015] The advantages of the present invention are:

[0016] The camming mechanism of the valve body is like a spiral shell, which is used to press the camming element to the left and right of the valve body, so that the camming element can pass smoothly and the camming element can move freely. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 The valve body structure of the present invention is schematically shown in FIG. Figure 1 ;

[0020] Figure 4 The valve body structure of the present invention is schematically shown in FIG. Figure 2 ;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle part;

[0022] Figure 6 The valve body structure of the present invention is schematically shown in FIG. Figure 3 ;

[0023] Figure 7 The structure of the liquid outlet connection assembly of the present invention is schematically shown in FIG. Figure 1 ;

[0024] Figure 8 The structure of the liquid outlet connection assembly of the present invention is schematically shown in FIG. Figure 2 ;

[0025] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle;

[0026] Fig.10 Schematic diagram of the liquid inlet connection assembly of the present invention Figure 1;

[0027] Fig.11 Schematic diagram of the liquid inlet connection assembly of the present invention Figure 2 ;

[0028] Fig.12 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0029] Fig.13 It is a schematic diagram of the structure of the cleaning component of the present invention in an idle state;

[0030] Fig.14 It is a schematic diagram of the working state structure of the cleaning component of the present invention;

[0031] Fig.15 for Fig.13 A partial enlarged view of point C in the middle;

[0032] Description of the markings in the figure:

[0033] Valve body 1; guide plate 2; valve hole 3; annular boss 4; valve disc 5; plug cover 6; fixing screw 7; lower pressure rod 8; positioning plate 9; connecting pipe 10; packing 11; pressure cover 12; support rod 13; upper rotating rod 14; hand wheel 15; connecting pipe 2 16; cross bracket 1 17; spring 18; limit ball 19; fixed pipe 1 20; water outlet pipe 21; baffle 22; rubber pad 1 23; cross bracket 2 24; push rod 1 25; connecting pipe 2 26 ; water inlet pipe 27; fixed pipe three 28; rubber pad two 29; cross bracket three 30; push rod two 31; limit ball two 32; spring two 33; cross bracket four 34; connecting pipe four 35; dust cover 36; outer rod 37; connecting plate 38; bracket 39; lever 40; inner rod 41; packing two 42; turntable 43; connecting rod 44; bent rod 45; brush assembly 46; packing three 47; boss 48; block 49; slot 50; scale line 51. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] Embodiment 1

[0037] like Figure 1-15 As shown, a high-pressure casting stop valve comprises a valve body 1, a guide plate 2 is arranged in the valve body 1, a valve hole 3 is arranged on the guide plate 2, a valve cover assembly is fixedly connected to the upper end of the valve body 1, a rotating rod assembly is threadedly connected to the valve cover assembly, a pressure rod assembly is rotatably connected to the lower end of the rotating rod assembly, the pressure rod assembly is slidably connected to the valve cover assembly, and after the pressure rod assembly moves downward, the cover is pressed on the valve hole 3;

[0038] The working principle of the above technical solution: when the stop valve is in use, the fluid enters the valve body 1 from one side of the valve body 1, passes through the valve hole 3 from the bottom of the guide plate 2, flows into the top of the guide plate 2, and then flows out from the other end of the valve body 1, the rotating rod assembly is rotated, the rotating rod assembly and the valve cover assembly are threaded, the rotating rod assembly rotates downward, the rotating rod assembly drives the pressure rod assembly to move downward, and the lower end cover of the pressure rod assembly is pressed on the valve hole 3 to close the valve hole 3, thereby blocking the flow of the fluid;

[0039] Rotate the rotating rod assembly in the reverse direction, the rotating rod assembly rotates and moves upward in the valve cover assembly, driving the pressure rod assembly to move upward, the lower end of the pressure rod assembly is separated from the valve hole 3, and the fluid can flow through the valve hole 3;

[0040] No matter whether the pressure rod assembly moves up or down, the lower end of the pressure rod assembly moves straight up and down without rotation, and is in squeeze contact with the edge of the valve hole 3, to avoid the valve stem in the traditional stop valve rotating, the valve stem rotates up or down, and the friction between the lower end of the valve stem and the edge of the valve hole 3 occurs. Long-term use will wear the edge of the valve hole 3 or the bottom of the valve stem, resulting in a decrease in its sealing performance.

[0041] Embodiment 2

[0042] like Figure 1-15As shown, the valve cover assembly includes a connecting pipe 10, which is fixed to the upper end of the valve body 1, a positioning plate 9 is provided at the bottom of the connecting pipe 10, and the positioning plate 9 is slidably connected to the pressure rod assembly. A gland 12 is fixed to the upper end of the connecting pipe 10, and the gland 12 seals the packing 11 at the connection between the connecting pipe 10 and the rotating rod assembly. A support rod 13 is fixed to the upper end of the gland 12, and the support rod 13 is threadedly connected to the rotating rod assembly. A reinforcing rib is provided at the connection between the gland 12 and the support rod 13;

[0043] The rotating rod assembly includes an upper rotating rod 14, a filler 11 is provided at the rotating connection between the upper rotating rod 14 and the connecting pipe 10, the lower end of the upper rotating rod 14 is rotatably connected to the pressure rod assembly, the middle part of the upper rotating rod 14 is threadedly connected to the support rod 13, the upper rotating rod 14 is fixed with a hand wheel 15, and the outer surface of the upper part of the upper rotating rod 14 is provided with a scale line 51;

[0044] The pressure rod assembly includes a lower pressure rod 8, which is slidably connected to a positioning plate 9, and the lower end of the lower pressure rod 8 is inserted into a valve disc 5. The valve disc 5 is fixedly connected to the lower pressure rod 8 by a fixing screw 7, and the end of the fixing screw 7 is hidden in a groove at the bottom of the valve disc 5. A plugging cover 6 is buckled in the groove at the bottom of the valve disc 5. An annular boss 4 is provided at the upper edge of the valve hole 3. After the valve disc 5 moves downward, the side edge of the valve disc 5 fits with the annular boss 4;

[0045] The working principle of the above technical solution is: turning the hand wheel 15 drives the upper rotating rod 14 to rotate, and drives the upper rotating rod 14 to rotate and descend in the support rod 13, and the lower end of the upper rotating rod 14 squeezes the lower pressure rod 8 to move downward, and the lower pressure rod 8 slides downward in the positioning plate 9. Since the side of the lower pressure rod 8 is provided with a ridge, the ridge is clamped on the positioning plate 9, so the lower pressure rod 8 will not rotate during the descent process, driving the valve disc 5 to descend. Since the inclination of the side edge of the valve disc 5 is consistent with the inclination of the edge of the annular boss 4, the valve disc 5 can be tightly fitted with the annular boss 4 when it descends, thereby increasing the sealing performance of the stop valve;

[0046] The hand wheel 15 is rotated in the reverse direction to drive the upper rotating rod 14 to rotate and rise in the support rod 13, drive the lower pressure rod 8 to move upward, drive the valve disc 5 to move upward, so that the valve disc 5 is separated from the annular boss 4, and the fluid can flow through the valve hole 3. The outer surface of the upper part of the upper rotating rod 14 is provided with scale lines 51. The opening and closing degree between the valve disc 5 and the annular boss 4 can be adjusted according to the scale lines 51 exposed at the upper end of the support rod 13, thereby controlling the flow rate of the fluid;

[0047] A packing 11 is provided at the rotation connection between the upper rotating rod 14 and the connecting pipe 10, which can effectively increase the sealing performance;

[0048] The lower end of the pressing rod 8 is inserted into the valve disc 5, and the fixing screw 7 passes through the lower end of the valve disc 5 and is threadedly connected and fixed to the lower end of the pressing rod 8, further increasing the firmness between the pressing rod 8 and the valve disc 5;

[0049] The plug cover 6 seals the end of the fixing screw 7 in the groove at the bottom of the valve disc 5 to prevent the mud and sand in the fluid from contaminating the cross pattern at the end of the fixing screw 7 and affecting the subsequent removal and installation of the fixing screw 7;

[0050] The valve disc 5 is a wearing part. When the valve disc 5 needs to be replaced, the plugging cover 6 is removed, and the fixing screw 7 is rotated and removed. The valve disc 5 can be separated from the lower pressure rod 8, and the new valve disc 5 is inserted into the bottom of the lower pressure rod 8 and fixed by the fixing screw 7. The plugging cover 6 is then re-engaged in the groove at the bottom of the valve disc 5 to complete the replacement of the valve disc 5. Compared with the traditional integrated valve stem, which requires the entire valve stem to be replaced, in this solution, only the valve disc 5 needs to be replaced, and the replacement cost is low.

[0051] Embodiment 3

[0052] like Figure 1-15 As shown, a liquid inlet connection assembly is provided on one side of the valve body 1, and a liquid outlet connection assembly is provided on the other side of the valve body 1. The liquid outlet connection assembly includes a connecting pipe 2 16, which is fixed to the side of the valve body 1, and a cross bracket 17 is provided at the end of the connecting pipe 2 16. The cross bracket 17 is fixedly connected to one end of a spring 18, and a limited ball 19 is fixed at the other end of the spring 18. A fixed pipe 20 is slidably connected to the outer side of the connecting pipe 2 16, and a baffle 22 is provided at the end of the connecting pipe 2 16. After the connecting pipe 2 16 is plugged into the outlet pipe 21, the fixed pipe 20 is threadedly connected to the outlet pipe 21, and a cross bracket 24 is fixed in the outlet pipe 21, and a push rod 25 is fixed on the cross bracket 24, and the push rod 25 is against the ball 19 in front.

[0053] A rubber pad 1 23 is provided between the connecting pipe 2 16 and the water outlet pipe 21. The middle section of the rubber pad 1 23 is elliptical. Part of the elliptical rubber pad 1 23 is located in the connecting pipe 2 16, and part of the elliptical rubber pad 1 23 is located in the water outlet pipe 21.

[0054] The working principle of the above technical solution is as follows: when the valve body 1 is connected to the outlet pipe 21 through the connecting pipe 16, the fixed pipe 20 is slid on the connecting pipe 16 to the side of the near cross bracket 17, and the end of the outlet pipe 21 is docked with the connecting pipe 16. At the same time, the front end of the push rod 25 pushes the limit ball 19 to move, and the limit ball 19 is separated from the inner boss 52, driving the spring 18 to be compressed, and the fixed pipe 20 is threadedly connected to the outlet pipe 21, and the rear end of the fixed pipe 20 is against the baffle. 22, the front end of the fixed pipe 20 is continuously rotated with the thread of the outlet pipe 21, squeezing the rubber pad 23 to deform, part of the elliptical rubber pad 23 is located in the connecting pipe 2 16, and part of the elliptical rubber pad 23 is located in the outlet pipe 21, thereby increasing the sealing performance. The fluid in the valve body 1 passes through the cross bracket 17, and then passes through the gap between the inner wall of the connecting pipe 2 16 and the limiting ball 19, and then flows out through the cross bracket 24. The installation with the outlet pipe 21 is convenient and quick, and no screws are required for fixing;

[0055] When it is necessary to separate from the water outlet pipe 21, the fixed pipe 20 is rotated in the reverse direction to drive the fixed pipe 20 to separate from the water outlet pipe 21, and the push rod 25 is separated from the limiting ball 19. Under the elastic force of the spring 18, the limiting ball 19 is driven to contact the inner boss 52, thereby preventing the fluid from flowing out. The disassembly between the water outlet pipe 21 is convenient and quick. At the same time, the water outlet pipe 21 can be disassembled when the stop valve is working normally, thereby preventing the fluid from flowing out and simplifying the operation.

[0056] Embodiment 4

[0057] like Figure 1-15 As shown, the liquid inlet connection assembly includes a second connecting pipe 26, which is fixed to the side of the valve body 1, and the second connecting pipe 26 is plugged into the water inlet pipe 27. A second rubber pad 29 is provided at the connection between the second connecting pipe 26 and the water inlet pipe 27. The water inlet pipe 27 is slidably connected to the third fixed pipe 28, and the third fixed pipe 28 is threadedly connected to the second connecting pipe 26;

[0058] The end of the water inlet pipe 27 is provided with a cross bracket 4 34, which is fixedly connected to one end of the spring 2 33, and the other end of the spring 2 33 is fixed with a limiting ball 2 32, and a cross bracket 3 30 is fixed in the connecting pipe 26, and a push rod 2 31 is fixed on the cross bracket 30, and the front end of the push rod 2 31 is against the limiting ball 2 32;

[0059] The working principle of the above technical solution is as follows: when the valve body 1 is connected to the water inlet pipe 27 through the connecting pipe 26, the water inlet pipe 27 is docked with the connecting pipe 26, the push rod 21 pushes the limiting ball 22 to move backward, driving the limiting ball 22 to separate from the inner boss 253, driving the spring 233 to be compressed, and the fixing pipe 328 is threadedly fixed to the connecting pipe 26, and the rubber pad 29 increases the sealing performance. The fluid in the water inlet pipe 27 passes through the cross bracket 434, passes through the gap between the inner wall of the water inlet pipe 27 and the limiting ball 232, and then enters the valve body 1 through the cross bracket 330;

[0060] When the water inlet pipe 27 needs to be removed, the fixing pipe 3 28 is rotated to separate the fixing pipe 3 28 from the connecting pipe 2 26, and the water inlet pipe 27 is quickly pulled out. Under the elastic force of the cross bracket 4 34, the limiting ball 2 32 is driven to move forward, and the limiting ball 2 32 contacts the inner boss 2 53, thereby blocking the fluid in the water inlet pipe 27 from entering the valve body 1;

[0061] When installing or separating from the water inlet pipe 27, there is no need to stop the fluid in the water inlet pipe 27. When the water inlet pipe 27 is separated from the connecting pipe 26, the limiting ball 2 32 blocks the flow of fluid. After the water inlet pipe 27 and the connecting pipe 2 26 are docked and installed, the limiting ball 2 32 is separated from the inner boss 2 53, and the fluid can flow, reducing the risk of loose installation between the water inlet pipe 27 and the connecting pipe 2 26, resulting in disconnection between the two and fluid outflow.

[0062] Embodiment 5

[0063] like Figure 1-15 As shown, a cleaning assembly is fixed at the lower end of the valve body 1, and the cleaning assembly includes a connecting pipe 435, which is fixed to the lower end of the valve body 1, and a dust cover 36 is inserted at the lower end of the connecting pipe 435, and the connecting pipe 435 is slidably connected to the outer rod 37, and a connecting plate 38 is fixed to the upper end of the outer rod 37, and two groups of brackets 39 are fixed to the upper end of the connecting plate 38, and the upper ends of the two groups of brackets 39 are rotatably connected to a bent rod 45, and a brush assembly 46 is provided on the bent rod 45, and the lower end of the bent rod 45 is rotatably connected to the connecting rod 44, and the lower end of the connecting rod 44 is rotatably connected to the rotating disk 43, and the lower end of the rotating disk 43 is fixed to the inner rod 41, and the inner rod 41 slides in the outer rod 37, and the connecting plate 38 is slidably connected to the inner rod 41, and the lower end of the outer rod 37 is fixed to the lever 40;

[0064] The connection between the connecting pipe 4 35 and the outer rod 37 is sealed with a filler 3 47, and the connection between the connecting plate 38 and the inner rod 41 is provided with a filler 2 42. The inner rod 41 is provided with a clamping block 49, and the clamping block 49 has a certain elasticity. The clamping block 49 is clamped in the clamping groove 50 on the outer rod 37, and the outer side of the outer rod 37 is provided with a boss 48;

[0065] The working principle of the above technical solution: after the stop valve is used for a long time, impurities will be attached to the edge of the valve hole 3, the annular boss 4 and the valve disc 5, affecting the sealing performance after the two are fitted together;

[0066] The caliber edge of the valve hole 3, the annular boss 4 and the valve disc 5 are cleaned by the cleaning assembly, the valve disc 5 is raised to keep a certain distance from the annular boss 4, the lever 40 is pushed up, the outer rod 37 is driven to rise, the connecting plate 38 and the bracket 39 are driven to rise, the curved rod 45 and the brush assembly 46 are driven to rise, and when the brush assembly 46 reaches the caliber edge of the valve hole 3, the inner rod 41 is pulled down, the block 49 is driven to move downward in the card slot 50, the rotating disk 43 is driven to move downward, the two connecting rods 44 are driven to move downward, the two curved rods 45 are driven to rotate, the upper ends of the two curved rods 45 expand outward, and the two brush assemblies 46 are driven to abut against the caliber edge of the valve hole 3, at this time, the lever 40 is rotated, the outer rod 37, the connecting plate 38 and the bracket 39 are driven to rotate, the connecting rod 44 and the curved rod 45 are driven to rotate, and the two brush assemblies 46 are driven to clean the impurities at the caliber edge of the valve hole 3;

[0067] Continue to push the lever 40 upward, so that the boss 48 on the outer rod 37 abuts against the lower end of the connecting pipe 435. At this time, the two brush assemblies 46 are located above the valve hole 3. Pull down the inner rod 41 to drive the block 49 to move downward in the slot 50, drive the rotating disk 43 to move downward, drive the two connecting rods 44 to move downward, drive the two curved rods 45 to rotate, and the upper ends of the two curved rods 45 continue to expand outward, drive the two brush assemblies 46 to expand outward, pull down the outer rod 37, drive the two brush assemblies 46 to move downward, and the outer sides of the two brush assemblies 46 contact the annular boss 4. At this time, rotate the lever 40 to drive the outer rod 37, the connecting disk 38, and the bracket 39 to rotate, drive the connecting rod 44 and the curved rod 45 to rotate, and drive the two brush assemblies 46 to clean the impurities at the edge of the annular boss 4.

[0068] The valve disc 5 is lowered, and the side edge of the valve disc 5 contacts the inner side of the two brush assemblies 46. At this time, the lever 40 is rotated to drive the outer rod 37, the connecting disc 38, and the bracket 39 to rotate, and the connecting rod 44 and the bent rod 45 to rotate, and the two brush assemblies 46 are driven to clean the impurities on the side of the valve disc 5;

[0069] The caliber edge of the valve hole 3, the annular boss 4 and the valve disc 5 can be cleaned conveniently and quickly, thereby improving the sealing performance of the stop valve;

[0070] The packing 2 42 and the packing 3 47 ensure the sealing of the cleaning assembly during use;

[0071] When the cleaning assembly is not in use, the connecting plate 38, the bracket 39 and the lever 40 are moved down into the connecting pipe 435 without affecting the flow of the fluid;

[0072] The brush assembly 46 is composed of a soft plate with bristles attached, and both ends of the soft plate are fixed to the bent rod 45 by screws.

[0073] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A high pressure casting stop valve, characterized in that: The valve body (1) comprises a valve body, a guide plate (2) is arranged inside the valve body (1), a valve hole (3) is arranged on the guide plate (2), a valve cover assembly is fixedly connected to the upper end of the valve body (1), a rotating rod assembly is threadedly connected to the inner side of the valve cover assembly, a pressure rod assembly is rotatably connected to the lower end of the rotating rod assembly, the pressure rod assembly is slidably connected to the valve cover assembly, and after the pressure rod assembly moves downward, the cover is pressed on the valve hole (3).

2. A high pressure casting stop valve according to claim 1, characterized in that: The valve cover assembly comprises a connecting pipe (10), the connecting pipe (10) is fixed at the upper end of the valve body (1), a positioning plate (9) is provided at the bottom of the connecting pipe (10), the positioning plate (9) is slidably connected to the pressure rod assembly, a pressure cover (12) is fixed at the upper end of the connecting pipe (10), the pressure cover (12) seals the packing (11) at the connection between the connecting pipe (10) and the rotating rod assembly, a support rod (13) is fixed at the upper end of the pressure cover (12), the support rod (13) is threadedly connected to the rotating rod assembly, and a reinforcing rib is provided at the connection between the pressure cover (12) and the support rod (13).

3. A high pressure casting stop valve according to claim 2, characterized in that: The rotating rod assembly comprises an upper rotating rod (14), a filler (11) is provided at the rotation connection between the upper rotating rod (14) and the connecting pipe (10), the lower end of the upper rotating rod (14) is rotationally connected to the pressure rod assembly, the middle part of the upper rotating rod (14) is threadedly connected to the support rod (13), the upper rotating rod (14) is fixed with a hand wheel (15), and the outer surface of the upper part of the upper rotating rod (14) is provided with a scale line (51).

4. A high pressure casting stop valve according to claim 3, characterized in that: The pressure rod assembly comprises a lower pressure rod (8), the lower pressure rod (8) is slidably connected to the positioning plate (9), the lower end of the lower pressure rod (8) is inserted into the valve disc (5), the valve disc (5) is fixedly connected to the lower pressure rod (8) by a fixing screw (7), the end of the fixing screw (7) is hidden in the bottom groove of the valve disc (5), the bottom groove of the valve disc (5) is buckled with a plug cover (6), an annular boss (4) is provided at the upper edge of the valve hole (3), and after the valve disc (5) moves downward, the side edge of the valve disc (5) fits with the annular boss (4).

5. The high pressure casting stop valve according to claim 1, characterized in that: The valve body (1) is provided with a liquid inlet connection assembly on one side, and a liquid outlet connection assembly on the other side. The liquid outlet connection assembly comprises a second connection pipe (16). The second connection pipe (16) is fixed to the side of the valve body (1). A cross bracket (17) is provided at the end of the second connection pipe (16). The cross bracket (17) is fixedly connected to one end of a spring (18). A limited ball (19) is fixed at the other end of the spring (18). A fixed pipe (20) is slidably connected to the outer side of the second connection pipe (16). A baffle (22) is provided at the end of the second connection pipe (16). After the second connection pipe (16) is plugged into the outlet pipe (21), the fixed pipe (20) is threadedly connected to the outlet pipe (21). A cross bracket (24) is fixed inside the outlet pipe (21). A push rod (25) is fixed on the cross bracket (24). The front of the push rod (25) abuts against the ball (19).

6. A high pressure casting stop valve according to claim 5, characterized in that: A rubber pad (23) is provided between the second connecting pipe (16) and the water outlet pipe (21), the middle portion of the cross section of the rubber pad (23) being elliptical, part of the elliptical rubber pad (23) being located in the second connecting pipe (16), and part of the elliptical rubber pad (23) being located in the water outlet pipe (21).

7. A high pressure casting stop valve according to claim 5, characterized in that: The liquid inlet connection assembly comprises a second connecting pipe (26), the second connecting pipe (26) is fixed on the side of the valve body (1), the second connecting pipe (26) is plugged into the water inlet pipe (27), a second rubber pad (29) is provided at the connection between the second connecting pipe (26) and the water inlet pipe (27), the water inlet pipe (27) is connected to a third fixed pipe (28) by sliding fit, and the third fixed pipe (28) is threadedly connected to the second connecting pipe (26).

8. A high pressure casting stop valve according to claim 7, characterized in that: A cross bracket four (34) is provided at the end of the water inlet pipe (27), the cross bracket four (34) is fixedly connected to one end of the spring two (33), the other end of the spring two (33) is fixed with a limiting ball two (32), a cross bracket three (30) is fixed inside the connecting pipe two (26), a push rod two (31) is fixed on the cross bracket three (30), and the front end of the push rod two (31) is against the limiting ball two (32).

9. The high pressure casting stop valve according to claim 1, characterized in that: A cleaning assembly is fixed at the lower end of the valve body (1), and the cleaning assembly comprises a connecting pipe (35). The connecting pipe (35) is fixed at the lower end of the valve body (1), a dust cover (36) is inserted at the lower end of the connecting pipe (35), the connecting pipe (35) is slidably connected to the outer rod (37), a connecting plate (38) is fixed at the upper end of the outer rod (37), two sets of brackets (39) are fixed at the upper end of the connecting plate (38), and the upper ends of the two sets of brackets (39) are A curved rod (45) is rotatably connected, a brush assembly (46) is provided on the curved rod (45), the lower end of the curved rod (45) is rotatably connected to a connecting rod (44), the lower end of the connecting rod (44) is rotatably connected to a rotating disk (43), an inner rod (41) is fixed to the lower end of the rotating disk (43), the inner rod (41) slides in the outer rod (37), the connecting disk (38) is slidably connected to the inner rod (41), and a shifting rod (40) is fixed to the lower end of the outer rod (37).

10. A high pressure casting stop valve according to claim 9, characterized in that: A third filler (47) is sealed at the connection between the fourth connecting pipe (35) and the outer rod (37), and a second filler (42) is sealed at the connection between the connecting plate (38) and the inner rod (41). A clamping block (49) is provided on the inner rod (41). The clamping block (49) has a certain elasticity and is clamped in a clamping groove (50) on the outer rod (37). A boss (48) is provided on the outer side of the outer rod (37).

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